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High Porosity Particulate Beds Structurally Stabilized by Epoxy

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
The present invention provides a porous thermal regenerator apparatus and method of making a porous thermal regenerator comprised of metallic or intermetallic particles that are held together in a porous three dimensional network by a binding agent (such as epoxy). One aspect of the apparatus is that the porosity of the porous thermal regenerator is greater than the tapped porosity of the particles comprising the porous thermal regenerator; moreover, the high-porosity apparatus is durable, that is, it remains intact when exposed to strong time-varying magnetic forces while immersed in aqueous fluid. This high porosity, when combined with high strength and aqueous heat transfer fluid stability, leads to improved porous thermal regenerators and concomitantly to magnetic refrigerators with improved performance.
Komorowski, Leonard Joseph (Cottage Grove, WI), Leonard, John Paul (Cambridge, WI), Russek, Steven Lee (Glendale, WI), Jacobs, Steven Alan (Madison, WI), Zimm, Carl Bruno (Madison, WI)
14/ 471,531
August 28, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with government support under DE-AR0000128 awarded by the U.S. Department of Energy. The government has certain rights in this invention.